Move the completed, verified, synced change folder to the dated archive:
openspec/changes/web-ui-rework/ -> openspec/changes/archive/2026-06-17-web-ui-rework/
Canonical spec stays in place at openspec/specs/web-ui/spec.md (not moved).
This is the physical archive step deferred (documented-pending-manual) in
archive-report.md ec46e26; user-approved.
Developer